Valve-tool.



F. C. FRIEBE.

VALVE TOOL.

APPLICATION FILED SEPT-17.1917.

1,296,279. Patented Mar. 4, 1919.

Y INI/ENTOI? A TTORNEI FRED 0. mean, or BAY CITY, MICHIGAN.

ALVE-TOOL.

Specification of Letters Patent.

Patented Mar. 4, 1919.

Application filed September 17, 1917. Serial No. 191,859.

To all whom it may concern:

Be it known that I, FRED C. FRIEBE, a citizen of the United: States ofAmerica, residing at Bay City, in the county of Bay and State ofMichigan, have invented certain new and useful Improvements in Valve-Tools, of which the following is a specification.

The insides of pneumatic valves, such as generally provided for theinner tubes of pneumatic tires, are placed in position and removed bvmeans of a slotted tool acting jointly with lugs provided on the valvehead. One or both of these lugs frequently become broken off or worn tosuch an extent that the tool fails to operate when it is required toremove the insides. of the valve. Under these conditions recourse musthadto an instrument to enable the insides of the valve to be removed,but it .not unfrequently happens that the use of such instruments marsthe inner threads of the valve stem and is otherwise unsatisfactory inresults.

This invention provides a tool which admits ofplacing the valve insidesin position and removing them from the stem both under normal'andabnormal conditions and which admits of holding the valve open toprovide an escape for the air when the tube is required to be deflated.

For a full understanding of the inven-.

tion, reference is to be had to the following description and thedrawing hereto at-' tached, in which:

Figure l is a sectional view of a valve stem and a side view of the toolillustrating the latter in position for removing the insides of thevalve;

Fig. 2 is a view in elevation of the tool and case therefor;

Fig 3 is a to View of the tool and case;

Fig. 4 is a side view of the tool;

Fig. 5 is a horizontal section on the line 4 4 of Fig. 4;

Fig. 6 is a' detail view of an end portion of the pin which is mountedtransversely. in the head of the tool;

Fig. 7 is an end view of a mutilated valve stem; and g Fig. 8 is asectional detail showing one use of the tool for truing a mutilatedvalve stem.

The tool comprises a head 7 a drift 8 at one end of the head and in linetherewith and a pin-16, the latter being mounted in an opening formedtransversely of the head 7 The pin 16 constitutes a handle for the tooland enables the same to be rotated. One end of the pin is slotted tomake engagement with the head of the valve insides to admit of placingthe same in position or removing them from the valve stem under normalconditions. The opposite end of the pin 16 is tapered, as indicated at15, and the extremity of the tapered end 15 is formed with a depression15 to makepositiv engagement with the valve when holding the latter opento provide an escape for the air when deflating the inner tube or likepart. The tapered end 15 of the pin 16 also enables the latter to beeifeotively used as a cleanin pin for removing accumulations from theinterior of the valve preparatory to re-tapping or cleaning the threadsby the tapping hereinafter described. The

drift 8 is tapered throughout its length and of non-circular outline incross-section, being preferably of triangular form as illustrated mostclearly in Fig. 5. The corners rovided at the angles of adjacent facesbite into the head of the valve insides and enable such head to bepositively turned when it is required to remove a mutiliated valve headwhich cannot be turned by the usual tool or by means of the slotted endof the pin 16. The head 7 and drift 8 are formed as one part and the pin16 is sepprate and retained in lace in an opening formed transversely trough the head 7.

The numeral 10 designates the stem of an air valve such as commonlypi'ovided in connection with the inner tubes of pneumatic tires. Thisstem 10 is formed with a bore to receive the valve insides and the upperportion of the bore is internally threaded as indicated at 14. Theinsides of threads M of the stem 10." Lugs farmed on the upper ,or outerend ofthe head 9 to be engaged bythe usual valve cap or tool general yprovided for placing the ice "valve insides in positionor removing them,I

train the stem 10 when the lugs 11 are in-' event of one or both of thetact. In the lugs 11 becoming worn or broken so as to prevent engagementof the usual tool therewith, it is necessary to employ an instrumentwhich may be introduced into the stem 10 and make positive engagementwith the head 9 to admit of rotating such head when removing the valveinsides. The present tool provides for removing the insides of the valvewhen the usual tool fails to take hold of the head 9 and rotate thesame. By introducing the drift 8 of the present tool into the stem 10and pressing the pointed end into the opening of the head 9, and givingthe tool a smart blow to cause the drift to engage the head 9, thelatter may be turned by rotating the tool through the instrumentality ofthe pin 16. hen the point of the drift 8 is forced into the opening ofthe head 9, the drift is centered in the stem 10 and is therebyprevented from injuring the threads 14.

From the foregoing, taken in connection with the accompanying drawing,it will be understood that the invention provides a valve tool capableof ordinary use and which enables the inside of a valve when disabled tobe readily removed from the valve stem without injury to the innerthreads of such valve stem, the tool also embodying means for holdingthe valve open when it is required to deflate the inner tube or likepart, this being accomplished by placing the recessed end 15" of the pin16, on the stem of the valve and pressing the latter inward. Thedepression .15 prevents slipping of the pin and the tapered end of thepin provides ample clearance for the escape of the air. A suitable case1:? is provided for receiving the tool as indicated most clearly in Fig.2, such case receiving the drift 8 and a ortion of the head 7.

he head 7 is recessed in the end opposite that provided with the drift 8and this recess is internally threaded, as. indicated at 19,'to formadie for cleaning. truing or renewing the threads at the outer end ofthe valve stem 10. The outer end of the threaded recess is counter-boredto prevent injury to the threads 19 when blows are delivered on the head7 to force the drift 8 into the part 9.

A second pin 17 is fitted in a transverse opening of the head 7 andextends at aright angle to the pin 16. One end of the pin 17 is threadedat 18 to form a tap for cleaning, truing or renewing the inner threadsof the stem 10. The extremity of the tap 18 is reduced at 18 to preventinjury to the thread when striking the tap on its end to side facesforming edges adapted to be driven into engagement with a valve, thestriking edge of the head permitting the tool to be struck for drivingthe drift into a valve without injuring the threads.

A valve tool comprising a head having a transversely disposed pinextending from opposite sides of the head and tapered at one end to forma truing portion and threaded at the other end and reduced beyond thescrew-threads to provide a strikin end to permit the truing end to bedriven into a valve stem without injuring the threads.

3. A'valve tool comprising a cylindrical head interiorly threaded at oneend and recessed beyond the threads to provide a striking edge, a driftextending from the other end of the head, the striking edge of the saidhead permitting the toolto be'struck for. driving the drift into a valvewithout injuring the screw-threads, and a transverse c caning pinextending from thehead at a point between the threads and the drift andforming a handle for the tool when driving the drift, and also whenrotating the head, and the latter forming a handle for the cleaning pinin the operation of the same.

In testimony whereof I aflix my signature.

FRED G. FRIEBE.

